Secure and Reliable RPC Nodes and APIs for Optimism

Streamline your development with high-quality Optimism infrastructure and 24/7 support.

Thank you! Your submission has been received!

Oops! Something went wrong while submitting the form.

Status

Test a Simple Call on Optimism

Try out our code - get yourAPI key for FREEand test how Tatum can simplify development.

Open this chain’s Postman collection:

Run and modify ready‑made RPC requests for this chain using the official Postman collection.

RPC Gateway

Connect to Optimism Gateway

Start your first RPC call on Optimism's Blockchain Gateway.

Smart Contract Tools on Optimism

Deploy, create, and interact with smart contracts on the Optimism network.

Estimate Gas on Optimism

Calculate the optimal gas fees for any transaction on Optimism.

Testnet Faucets for Optimism

Get free testnet tokens for development on the Optimism network.

Data API

Check Malicious Address

Verify if an address on Optimism is flagged as malicious or suspicious.

Notifications

Real-time Alerts for Optimism

Receive instant webhook notifications for any event on Optimism.

Notification Types on Optimism

Discover incoming and outgoing transaction events for Optimism wallet addresses.

Frequently Asked Questions

How to connect to the Optimism gateway?

Connect to Tatum's Optimism RPC Gateway using the endpoint format: optimism-mainnet.gateway.tatum.io or optimism-testnet.gateway.tatum.io.

Tatum's RPC Gateway provides discovery endpoints to help you explore available functionality:

/llms.txt: Access AI context and documentation for the network
/_methods: Discover all supported interfaces and RPC methods for the network

‍
‍

How are the RPC calls priced?

Credits are consumed based on the complexity and resource requirements of each RPC method:

2 credits are consumed for Standard RPC methods (most common operations)
5 credits are consumed for the eth_call method
50 credits are consumed for Debug and Trace methods

‍

How do you authenticate your API key?

When using the Tatum REST API or SDK, you need to authenticate yourself with an API key. Access Tatum services by authenticating with your API key using one of the following methods:

X-API-Key in header (Recommended): Pass your API key in the x-api-key header
Authorization Header (Bearer): Use authorization: bearer {YOUR_API_KEY}
Authorization Header (Basic): Use HTTP Basic Authentication

For detailed authentication instructions and best practices, see the Authentication & Security documentation.

Get your API key by signing up at the Tatum Dashboard. Each free account includes two API keys – one for Mainnet and one for Testnet.

‍

Building Something Big on Optimism? Let's Talk.

Not into forms? Chat on Telegram.

Access the Tatum Platform

Tatum gives you a powerful Dashboard to track and manage your app.

Preview of the Tatum Dashboard - usage section.